curl --location 'https://qyapi.weixin.qq.com/cgi-bin/oa/schedule/add_attendees?access_token=ACCESS_TOKEN' \
--header 'Content-Type: application/json' \
--data '{
"schedule_id": "17c7d2bd9f20d652840f72f59e796AAA",
"attendees": [{
"userid": "userid2"
}]
}'{
"errcode": 0,
"errmsg": "ok"
}